Appendix B
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RS232 Communications Reference Manual
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Appendix A - CRC-16 Calculation
CRC-16 Calculation
See following function:
extern void calculate_CRC(unsigned char *message, int length, unsigned char *CRC)
{
unsigned char CRCHi, CRCLo, TempHi, TempLo;
static const unsigned char table[512] = {
0x00,
0x00,
0xC0,
0xC1,
0xC1,
0x81,
0x01,
0x40,
0xC3,
0x01,
0x03,
0xC0,
0x02,
0x80,
0xC2,
0x41,
0xC6, 0x01,
0x06,
0xC0,
0x07,
0x80,
0xC7,
0x41,
0x05,
0x00,
0xC5,
0xC1,
0xC4,
0x81,
0x04,
0x40,
0xCC, 0x01,
0x0C,
0xC0,
0x0D, 0x80,
0xCD, 0x41,
0x0F,
0x00,
0xCF, 0xC1,
0xCE, 0x81,
0x0E,
0x40,
0x0A, 0x00,
0xCA, 0xC1,
0xCB, 0x81,
0x0B,
0x40,
0xC9,
0x01,
0x09,
0xC0,
0x08,
0x80,
0xC8,
0x41,
0xD8, 0x01,
0x18,
0xC0,
0x19,
0x80,
0xD9, 0x41,
0x1B,
0x00,
0xDB, 0xC1,
0xDA, 0x81,
0x1A, 0x40,
0x1E, 0x00,
0xDE, 0xC1,
0xDF, 0x81,
0x1F,
0x40,
0xDD, 0x01,
0x1D, 0xC0,
0x1C,
0x80,
0xDC, 0x41,
0x14,
0x00,
0xD4, 0xC1,
0xD5, 0x81,
0x15,
0x40,
0xD7, 0x01,
0x17,
0xC0,
0x16,
0x80,
0xD6, 0x41,
0xD2, 0x01,
0x12,
0xC0,
0x13,
0x80,
0xD3, 0x41,
0x11,
0x00,
0xD1, 0xC1,
0xD0, 0x81,
0x10,
0x40,
0xF0,
0x01,
0x30,
0xC0,
0x31,
0x80,
0xF1,
0x41,
0x33,
0x00,
0xF3,
0xC1,
0xF2,
0x81,
0x32,
0x40,
0x36,
0x00,
0xF6,
0xC1,
0xF7,
0x81,
0x37,
0x40,
0xF5,
0x01,
0x35,
0xC0,
0x34,
0x80,
0xF4,
0x41,
0x3C, 0x00,
0xFC, 0xC1,
0xFD, 0x81,
0x3D, 0x40,
0xFF,
0x01,
0x3F,
0xC0,
0x3E,
0x80,
0xFE,
0x41,
0xFA, 0x01,
0x3A, 0xC0,
0x3B,
0x80,
0xFB, 0x41,
0x39,
0x00,
0xF9,
0xC1,
0xF8,
0x81,
0x38,
0x40,
0x28,
0x00,
0xE8,
0xC1,
0xE9,
0x81,
0x29,
0x40,
0xEB, 0x01,
0x2B,
0xC0,
0x2A, 0x80,
0xEA, 0x41,
0xEE, 0x01,
0x2E,
0xC0,
0x2F,
0x80,
0xEF,
0x41,
0x2D, 0x00,
0xED, 0xC1,
0xEC, 0x81,
0x2C,
0x40,
0xE4, 0x01,
0x24,
0xC0,
0x25,
0x80,
0xE5,
0x41,
0x27,
0x00,
0xE7,
0xC1,
0xE6,
0x81,
0x26,
0x40,
0x22,
0x00,
0xE2,
0xC1,
0xE3,
0x81,
0x23,
0x40,
0xE1,
0x01,
0x21,
0xC0,
0x20,
0x80,
0xE0,
0x41,
0xA0, 0x01,
0x60,
0xC0,
0x61,
0x80,
0xA1, 0x41,
0x63,
0x00,
0xA3, 0xC1,
0xA2, 0x81,
0x62,
0x40,
0x66,
0x00,
0xA6, 0xC1,
0xA7, 0x81,
0x67,
0x40,
0xA5, 0x01,
0x65,
0xC0,
0x64,
0x80,
0xA4, 0x41,
0x6C, 0x00,
0xAC, 0xC1,
0xAD, 0x81,
0x6D, 0x40,
0xAF, 0x01,
0x6F,
0xC0,
0x6E,
0x80,
0xAE, 0x41,
0xAA, 0x01,
0x6A, 0xC0,
0x6B,
0x80,
0xAB, 0x41,
0x69,
0x00,
0xA9, 0xC1,
0xA8, 0x81,
0x68,
0x40,
0x78,
0x00,
0xB8,
0xC1,
0xB9,
0x81,
0x79,
0x40,
0xBB, 0x01,
0x7B,
0xC0,
0x7A, 0x80,
0xBA, 0x41,
0xBE, 0x01,
0x7E,
0xC0,
0x7F,
0x80,
0xBF, 0x41,
0x7D, 0x00,
0xBD, 0xC1,
0xBC, 0x81,
0x7C,
0x40,
0xB4, 0x01,
0x74,
0xC0,
0x75,
0x80,
0xB5,
0x41,
0x77,
0x00,
0xB7,
0xC1,
0xB6,
0x81,
0x76,
0x40,
0x72,
0x00,
0xB2,
0xC1,
0xB3,
0x81,
0x73,
0x40,
0xB1,
0x01,
0x71,
0xC0,
0x70,
0x80,
0xB0,
0x41,
0x50,
0x00,
0x90,
0xC1,
0x91,
0x81,
0x51,
0x40,
0x93,
0x01,
0x53,
0xC0,
0x52,
0x80,
0x92,
0x41,
0x96,
0x01,
0x56,
0xC0,
0x57,
0x80,
0x97,
0x41,
0x55,
0x00,
0x95,
0xC1,
0x94,
0x81,
0x54,
0x40,
0x9C, 0x01,
0x5C,
0xC0,
0x5D, 0x80,
0x9D, 0x41,
0x5F,
0x00,
0x9F,
0xC1,
0x9E,
0x81,
0x5E,
0x40,
0x5A, 0x00,
0x9A, 0xC1,
0x9B,
0x81,
0x5B,
0x40,
0x99,
0x01,
0x59,
0xC0,
0x58,
0x80,
0x98,
0x41,
0x88,
0x01,
0x48,
0xC0,
0x49,
0x80,
0x89,
0x41,
0x4B,
0x00,
0x8B,
0xC1,
0x8A, 0x81,
0x4A, 0x40,
0x4E, 0x00,
0x8E,
0xC1,
0x8F,
0x81,
0x4F,
0x40,
0x8D, 0x01,
0x4D, 0xC0,
0x4C,
0x80,
0x8C,
0x41,
0x44,
0x00,
0x84,
0xC1,
0x85,
0x81,
0x45,
0x40,
0x87,
0x01,
0x47,
0xC0,
0x46,
0x80,
0x86,
0x41,
0x82,
0x01,
0x42,
0xC0,
0x43,
0x80,
0x83,
0x41,
0x41,
0x00,
0x81,
0xC1,
0x80,
0x81,
0x40,
0x40,
};
CRCHi = 0xff;
CRCLo = 0xff;
while(length)
{
TempHi = CRCHi;
TempLo = CRCLo;
CRCHi = table[2 * (*message ^ TempLo)];
CRCLo = TempHi ^ table[(2 * (*message ^ TempLo)) + 1];
+;
length--;
};
CRC [0] = CRCLo;
CRC [1] = CRCHi;
return;
}
Содержание RS-232
Страница 12: ...Overview 2 RS232 Communications Reference Manual 8 99 ...
Страница 24: ...Protocol Description 14 RS232 Communications Reference Manual 8 99 ...
Страница 36: ...PC Communication Driver 26 RS232 Communications Reference Manual 8 99 ...
Страница 121: ...Function Parameter Index Reference 8 99 RS232 Communications Reference Manual 111 Static Configuration Parameters None ...
Страница 143: ...Function Parameter Index Reference 8 99 RS232 Communications Reference Manual 133 ...
Страница 150: ...Index 140 RS232 Communications Reference Manual 8 99 ...
Страница 151: ......
Страница 152: ...Industrial Automation and Control Honeywell Inc 1100 Virginia Drive Fort Washington Pennsylvania 19034 ...